Toby Hemenway (April 23, 1952 – December 20, 2016) was an American author and educator who wrote extensively on permaculture and ecological issues. He was the author of Gaia's Garden: A Guide to Home-Scale Permaculture and The Permaculture City: Regenerative Design for Urban, Suburban, and Town Resilience. He served as an adjunct professor at Portland State University, Scholar-in-Residence at Pacific University, and field director at the Permaculture Institute (USA). Source: Wikipedia (en)